Battery terminal anvil



y 1950 A. L. LEETH BATTERY TERMINAL ANVIL Filed Feb. 20, 1947' INVENTOR. A. L. LEETH ATTORNEY Patented May 30, 1950 UNITED STATES T QFFICE 3 Claims.

This invention relates to electrical systems, and more particularly to separable connections which are subject to corrosion, as for example, the terminals of wet cell storage batteries and the conductors which are fastened to such terminals and must be separated therefrom in order to apply or remove a battery.

More particularly the invention relates to a portable anvil having a tapered post or a mandrel for receiving the terminal clamp which fits on the terminal post of a battery, and by means of which anvil with its post the terminal clamp can be hammered thereon for expandin the same and for removing the fastening bolt therefrom, particularly when corrosion has caused the bolt to adhere to the clamp.

An object of the invention resides in the provision of improved apparatus for working battery terminal clamps to expand such clamps and remove corrosion therefrom and to remove the fastening bolts from such clamps which apparatus is conveniently portable, yet of sufiicient weight to provide a solid anvil on which the terminal clamps may be worked by a hammer and punch or similar tools, in which the clamp engaging parts are sufiiciently strong and durable to withstand the shocks and forces applied in expanding the terminal clamps and driving corroded fastening bolts out of them, which will firmly hold the terminal clamps in position for the removal of corroded fastening bolts and which is formed of a corrosion resisting material.

Other objects and advantages will be apparent from a, consideration of the following description in conjunction with the accompanying drawings wherein:

Fig. l is an isometric view of a portable anvil and driving member illustrative of the invention;

Fig. 2, a top plan view illustrating one use of the device of the invention;

Fig, 3, a view similar to Fig. 2 illustrating the use of the device to expand a battery terminal clamp; and

Fig. 4, a part side elevational, part longitudinal, section of a driving member.

With continued reference to the drawings the invention comprises apparatus in the form of a kit consisting of a small portable anvil and a driving member for applying the force of a hammer to a battery terminal clamp held on the anvil. The anvil includes a base block Iii of generally onbical shape preferably formed of a corrosion resisting metal, such as cooper, bronze, or brass, but may be formed of other materials without exceeding the scope of the invention. The base as shown is only enerally in the form of a cube, one dimension being somewhat greater than the o her, so that four sides are substantially rectangular, while the other two opposite sides are substantially square.

.On the top of the base block is a tapered post or mandrel i i, and a backing member or stop l2} formed integrally with the base block or rigidly secured thereto. The backing member has upr ht sides and is generally rectangular in shape. This backing member or stop H! is preferably integral with the base H2 or is securely fixed thereto, one end of which is provided with a cylindrical concaved. surface M, the radius of curvature of which. is centered on the longitudinal centerline of the mandrel II. The space between the curved surface H and the exterior of the tapered post or mandrel I l is sufficient to loosely accommodate a terminal clamp IS. The terminal clamp is provided at one side with a socket 5B which receives the end of a conductor it which is connected by the clamp to a battery pole (not shown) when the clamp is in operative position. At its opposite side the clamp is provided with spaced lugs H which are adapted to be drawn together by means of a bolt H3 threaded through a nut (not shown). Corrosion 19 caused by the reaction of battery acid with the metal of the clamp causes the bolt I 8 to adhere to the clamp. By applying the terminal clamp to the tapered post or mandrel H of the anvil, it can be held, while the bolt is driven out, the backing member or stop serving to limit the rotation of the terminal clamp on the tapered post. In order to expand the terminal clamp and thereby loosen the bolt, a tubular driving member 28 may be employed. This tubular driving member is of a diameter sufficient to permit it to pass freely over the mandrel l l a suilicient distance to force the terminal clamp down upon the mandrel by transferring to the clamp the force of hammer blows delivered to the upper end of the driving member.

Instead of the tubular driving member 20 a partly tubular or drilled driving member 26 having a solid head 22 and a tapered bore 23 may be employed, this type of driving member being more durable than that previously described.

In the use of the device the anvil lil may be held adjacent the battery of an automobile or the like or rested upon a part of the automobile, and the terminal clamp attached to the conductor IS, the other end of which may be attached to the automobile, can be placed upon the tapered post or mandrel I l, and the bolt removed or the clamp expanded in accordance with requirements, and with greater convenience than heretofore obtained.

There is thus provided a simple, inexpensive and conveniently portable device which greatly facilitates the removal of corroded bolt from storage battery terminal clamps and renders it easy to expand such clamps a desired amount without requiring removal of the clamp from the conductor to which it is attached or the disconnection of the conductor from the battery carrying vehicle.

It .will be obvious to those skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereof and therefore the invention is not limited by that which is shown in the drawing and described in the specification but only as indicated in the appended claims.

What is claimed is:

1. An anvil comprisin a cubical base having a flat top surface; a tapered mandrel extending upwardly from said surface with its axis disposed substantially at right angles to said surface; and a backing block extending upwardly from said flat surface having a top surface substantially parallel to said base and with upright side surfaces generally parallel to said cubical base, said backing block having a cylindrically concave surface adjacent said mandrel with a radius of curvature centered about the axis of said mandrel.

2. An expander and holder for battery terminal clamps comprising a generally cubical base having a flat surface; a tapered mandrel extending outwardly from said surface with its longitudinal center line substantially at right angles to said surface; and a backing block on said base sur- 4 face having a top surface substantially parallel to said base surface, said backing block having upright side surfaces and a cylindrically concave end surface adjacent said mandrel with a radius of curvature centered on said mandrel center line.

3. An anvil comprising a base having a substantially flat side, a substantially frusto-conical post extending from said side of said block substantially at right angles thereto, a backing block extending outwardly from said side and located in spaced relation to said post, the entire side of said block adjacent said post being cylindrically concaved with the axis of said cylinder being parallel with the axis of said post, and the sides of said block contiguous with said concave side extending from the sides of said concavity away from said post and located within a sector bounded by the extended radii of said post that pass through the juncture of said concavity and said sides.

ASHBY L. LEE'II-I.

REFERENCES CITED The following references arerof record in the file of this patent:

UNITED STATES PATENTS Number Name Date 56,599 Norton July 24, 1866 297,853 Rubert Apr. 29, 1884 650,363 Allen May 29, 1900 1,692,004 Tolmie Nov. 20, 1928 1,732,654 Olmstead Oct, 22, 1929 FOREIGN PATENTS Number Country Date 653,678 France Nov. 19, 1928 

